This was a Phase 2, multicenter, open-label, 2-cohort, 2-stage study that assessed the ORR of lenvatinib in previously treated participants with AJCC unresectable Stage III or Stage IV melanoma and disease progression. Cohort 1 enrolled participants not harboring the V600E BRAF mutation with disease progression following up to 2 prior systemic anticancer regimens (excluding anti-VEGF) for unresectable Stage III or Stage IV melanoma, and is referred to as Cohort 1 or V600E BRAF negative. Other less common BRAF activating mutations were allowed as long as the participant did not receive a BRAF-targeted therapy. Cohort 2 enrolled participants harboring the activating BRAF mutations (mainly the V600E mutation) with disease progression following BRAF V600E-targeted therapy, and is referred to as Cohort 2 or V600E BRAF positive. Eligible participants had measurable disease according to RECIST 1.1.